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  • 1
    Publication Date: 2008-02-22
    Description: Quantifying the number of deleterious mutations per diploid human genome is of crucial concern to both evolutionary and medical geneticists. Here we combine genome-wide polymorphism data from PCR-based exon resequencing, comparative genomic data across mammalian species, and protein structure predictions to estimate the number of functionally consequential single-nucleotide polymorphisms (SNPs) carried by each of 15 African American (AA) and 20 European American (EA) individuals. We find that AAs show significantly higher levels of nucleotide heterozygosity than do EAs for all categories of functional SNPs considered, including synonymous, non-synonymous, predicted 'benign', predicted 'possibly damaging' and predicted 'probably damaging' SNPs. This result is wholly consistent with previous work showing higher overall levels of nucleotide variation in African populations than in Europeans. EA individuals, in contrast, have significantly more genotypes homozygous for the derived allele at synonymous and non-synonymous SNPs and for the damaging allele at 'probably damaging' SNPs than AAs do. For SNPs segregating only in one population or the other, the proportion of non-synonymous SNPs is significantly higher in the EA sample (55.4%) than in the AA sample (47.0%; P 〈 2.3 x 10(-37)). We observe a similar proportional excess of SNPs that are inferred to be 'probably damaging' (15.9% in EA; 12.1% in AA; P 〈 3.3 x 10(-11)). Using extensive simulations, we show that this excess proportion of segregating damaging alleles in Europeans is probably a consequence of a bottleneck that Europeans experienced at about the time of the migration out of Africa.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2923434/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2923434/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lohmueller, Kirk E -- Indap, Amit R -- Schmidt, Steffen -- Boyko, Adam R -- Hernandez, Ryan D -- Hubisz, Melissa J -- Sninsky, John J -- White, Thomas J -- Sunyaev, Shamil R -- Nielsen, Rasmus -- Clark, Andrew G -- Bustamante, Carlos D -- P50 GM065509/GM/NIGMS NIH HHS/ -- P50 GM065509-070006/GM/NIGMS NIH HHS/ -- R01 HG003229/HG/NHGRI NIH HHS/ -- R01 HG003229-03/HG/NHGRI NIH HHS/ -- R01 HL072904/HL/NHLBI NIH HHS/ -- England -- Nature. 2008 Feb 21;451(7181):994-7. doi: 10.1038/nature06611.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18288194" target="_blank"〉PubMed〈/a〉
    Keywords: Africa/ethnology ; Alleles ; Computational Biology ; Emigration and Immigration ; Europe/ethnology ; Exons/genetics ; Genome, Human/*genetics ; Heterozygote ; Homozygote ; Humans ; Polymerase Chain Reaction ; Polymorphism, Single Nucleotide/*genetics ; United States
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2011-09-24
    Description: We present an Aboriginal Australian genomic sequence obtained from a 100-year-old lock of hair donated by an Aboriginal man from southern Western Australia in the early 20th century. We detect no evidence of European admixture and estimate contamination levels to be below 0.5%. We show that Aboriginal Australians are descendants of an early human dispersal into eastern Asia, possibly 62,000 to 75,000 years ago. This dispersal is separate from the one that gave rise to modern Asians 25,000 to 38,000 years ago. We also find evidence of gene flow between populations of the two dispersal waves prior to the divergence of Native Americans from modern Asian ancestors. Our findings support the hypothesis that present-day Aboriginal Australians descend from the earliest humans to occupy Australia, likely representing one of the oldest continuous populations outside Africa.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3991479/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3991479/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rasmussen, Morten -- Guo, Xiaosen -- Wang, Yong -- Lohmueller, Kirk E -- Rasmussen, Simon -- Albrechtsen, Anders -- Skotte, Line -- Lindgreen, Stinus -- Metspalu, Mait -- Jombart, Thibaut -- Kivisild, Toomas -- Zhai, Weiwei -- Eriksson, Anders -- Manica, Andrea -- Orlando, Ludovic -- De La Vega, Francisco M -- Tridico, Silvana -- Metspalu, Ene -- Nielsen, Kasper -- Avila-Arcos, Maria C -- Moreno-Mayar, J Victor -- Muller, Craig -- Dortch, Joe -- Gilbert, M Thomas P -- Lund, Ole -- Wesolowska, Agata -- Karmin, Monika -- Weinert, Lucy A -- Wang, Bo -- Li, Jun -- Tai, Shuaishuai -- Xiao, Fei -- Hanihara, Tsunehiko -- van Driem, George -- Jha, Aashish R -- Ricaut, Francois-Xavier -- de Knijff, Peter -- Migliano, Andrea B -- Gallego Romero, Irene -- Kristiansen, Karsten -- Lambert, David M -- Brunak, Soren -- Forster, Peter -- Brinkmann, Bernd -- Nehlich, Olaf -- Bunce, Michael -- Richards, Michael -- Gupta, Ramneek -- Bustamante, Carlos D -- Krogh, Anders -- Foley, Robert A -- Lahr, Marta M -- Balloux, Francois -- Sicheritz-Ponten, Thomas -- Villems, Richard -- Nielsen, Rasmus -- Wang, Jun -- Willerslev, Eske -- BB/H005854/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/H008802/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- R01 HG003229/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2011 Oct 7;334(6052):94-8. doi: 10.1126/science.1211177. Epub 2011 Sep 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for GeoGenetics, Natural History Museum of Denmark, Oster Voldgade 5-7, 1350 Copenhagen, Denmark.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21940856" target="_blank"〉PubMed〈/a〉
    Keywords: African Continental Ancestry Group ; Animals ; Asia ; Asian Continental Ancestry Group/genetics ; Computer Simulation ; DNA, Mitochondrial/genetics ; Emigration and Immigration ; Ethnic Groups/genetics ; European Continental Ancestry Group/genetics ; Far East ; Gene Flow ; Gene Frequency ; Genetics, Population/methods ; *Genome, Human ; Genome, Mitochondrial ; Haplotypes ; Hominidae/genetics ; Humans ; Linkage Disequilibrium ; Male ; Oceanic Ancestry Group/*genetics ; Phylogeny ; Polymorphism, Single Nucleotide ; Sequence Analysis, DNA ; Western Australia
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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